C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 7/44 (2006.01) C01F 7/02 (2006.01) C08K 3/22 (2006.01)
Patent
CA 2563287
The invention relates to a flame-retardant filler based on aluminium hydroxide, its use in polymers and a method for its production, in which aluminium hydroxide in the form of a bayerite/gibbsite mixture is modified under pressure of temperatures of at least 170~C in the presence of water and crystal growth regulator, the aluminium hydroxide used as starting material having an average particle size d50 from 0.1 to 4~m.
La présente invention concerne une charge ignifugeante à base d'hydroxyde d'aluminium, son utilisation dans des polymères et un procédé pour la produire, de l'hydroxyde d'aluminium qui se présente sous la forme de bayerite ou d'un mélange bayerite/gibbsite, étant modifié sous pression à des températures d'au moins 170 ·C en la présence d'eau et de régulateur de croissance cristalline, l'hydroxyde d'aluminium utilisé comme matériau de départ, ayant une taille de particule moyenne d¿50 ?de 0,1 à 4?m.
Bilandzic Genoveva
Dittmar Thomas
Hentschel Bernhard
Herbiet Rene
Neuenhaus Mario
Albemarle Corporation
Macrae & Co.
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